This monograph supplements a special series stemming from a major conference entitled ÒImplementing Plan Colombia: Strategic and Operational Imperative.Ó The conference was cosponsored by the Dante B. Fascell North-South Center of the University of Miami and the Strategic Studies Institute of the U.S. Army War College. The intent was to explore the multiple dimensions of ColombiaÕs ongoing crisis and inform the public debate regarding the challenges faced by the statesmen, intellectuals, military strategists, and others who take on the responsibility to deal with that crisis. Some of the monographs in the series have generated passions. This is another one that is likely to do that. Hopefully, it will also generate serious reflection about the tough choices Colombian, U.S., and other global leaders face. The author, David Spencer, points out, first, that the Colombian paramilitary Òself-defenseÓ forces represent some important sectors of society, and enjoy more popular support from Colombian society than...